Aguilera earned her second number-one record in the United States with her fifth studio album, Back to Basics (2006), which incorporates elements of 1920s–1940s blues, soul, and jazz music. Two of its singles, "Ain't No Other Man" and "Hurt", charted in the upper registers of record charts worldwide. In 2010, Aguilera released her electronic-inspired sixth studio album, Bionic, although it made little commercial impact. Later that year, Aguilera starred alongside Cher in the film Burlesque. In 2011, Aguilera became an original coach on the U.S. television series The Voice, and has since appeared on four of its six seasons. That year, she earned her fifth number-one single in the United States with herMaroon 5 collaboration "Moves like Jagger". Aguilera returned to the pop sound of her debut record with her seventh studio album, Lotus (2012), although it became the lowest-selling album of her career. She experienced revitalized commercial success as the featured vocalist on the US top-ten singles "Feel This Moment" and "Say Something" in 2013 and 2014, respectively.
Aguilera is an established pop icon; her work has earned her numerous awards and accolades, including four Grammy Awards, one Latin Grammy Award and a star on the Hollywood Walk of Fame. To date, Aguilera has sold 17.4 million albums in the United States and 50 million records worldwide. Rolling Stone ranked her at number 58 on their list of 100 Greatest Singers of All Time, becoming the youngest singer to appear on the list, while Billboard recognized Aguilera as the 20th best-selling artist of the 2000s. Besides her work in the entertainment industry, Aguilera is involved in charitable activities through human rights, world issues, and her work as a UN ambassador for the World Food Programme.